MESON Chess Problem Database

Problem Display
PID: 231522 (8/4N1Q1/6p1/6kb/8/6K1/8/8 w - - 0 1)

Regos, Imre

Magyar Sakkvilag, 1927

8/4N1Q1/6p1/6kb/8/6K1/8/8

#2

3 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxg6#
    • 1...Be2
      • 2.Qxg6#
    • 1...Bf3
      • 2.Qxg6#
    • 1...Bg4
      • 2.Qxg6#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qf4#
      • 1...Bd1
        • 2.Qxg6#
      • 1...Be2
        • 2.Qxg6#
      • 1...Bf3
        • 2.Qxg6#
      • 1...Bg4
        • 2.Qxg6#
      • 1...Kh6!
    • 1.Qh7?
      • 1...Bd1
        • 2.Qxg6#
        • 2.Qh4#
      • 1...Be2
        • 2.Qxg6#
        • 2.Qh4#
      • 1...Bf3
        • 2.Qxg6#
        • 2.Qh4#
      • 1...Bg4
        • 2.Qxg6#
        • 2.Qh4#
      • 1...Kf6!
  • Keys
    • 1.Qh8!
      • 1...Bd1
        • 2.Qh4#
      • 1...Be2
        • 2.Qh4#
      • 1...Bf3
        • 2.Qh4#
      • 1...Bg4
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::QAR1(C),XP(c)
  • Tries
    • Try
      • Q(C);N_PINP(c)
      • Threat
        • QAB1(C)
      • Vars
        • B(b);N_GUARD::QAR1(C),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);N_PINP(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);N_PINP(c)
    • Vars
      • B(b);OGATE::QAB1(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).